I have been on Thyroxine for years but want to try Nature Throid, as I think it might be better for me, as it contains calcitonin. However, I have noticed that lots of people here suggest getting Ferritin levels at least 70 before starting. I have low Ferritin, and just below mid B12. If I'm already taking Thyroxine on these levels, and surviving, what's the difference between taking Thyroxine and NDT when thinking about Ferritin levels? what difference will it make? Will there be a different reaction, and why?

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All thyroid meds work better when ferritin is optimal but some members seem to think they won't work at all when ferritin is low. There's no reason why you shouldn't switch to NatureThroid while ferritin is sub optimal.

This is really useful! I saw some threads on other forums where people were reporting terrible reactions to T3 and NDT to do with Ferritin levels being low, or so they seemed to believe, but I think with this understanding of the different points of view I feel stronger to just have a go! BTW, how much iron should I take do you think to get my ferritin levels better?

Thanks for all this info. I bought Iron Bisglycinate 214mg and got very bloated- what do you think, and every one else, of Floradix, which suggests 15mg a day, perhaps taking more than suggested? I suppose I would have to drink half the bottle to get what I need!

I was taking Swanson Super Stress B complex which has 125mcg of B12 in the form cyanocobalamin but it seemed to make me depressed. that was already 2000 % of the daily value necessary- so 1000mg seems extraordinarily high. But is the other format -methylcobalamin-a better one?

As for Vit D, those were the reference ranges for Italy on the print out. I am currently taking 5000 IU Vit D.

In terms of iron, once you start supplementing, does it just build up gradually? Does that mean it's difficult to get rid of if you take too much? One day I took an iron tablet and then some Floradix by mistake and got a terrible headache and very exhausted which is totally out of the norm for me.

Hi there Reallyfedup! Well, my levels of Ferritin are very low, so I'm wondering how I'm able to survive? I'm pretty active and have good energy levels. Do you think my adrenals are over working with Cortisol to compensate? I did get a test done and they were pretty high!

My ferritin levels were low when I started on NDT and I was concerned too but I've had no problems. I have been supplementing with Solgar Gentle iron and after my last ferritin test last week my levels have increased significantly so I would recommend them x